Airworthiness Directive · Amendment 39-19755 · Fuselage
The Boeing Company Airplanes
Superseded. A later AD replaced this one: AD 2019-22-10. Comply with the one in force.
This AD applies to all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD requires repetitive inspections for cracking of the left and right hand side outboard chords of frame fittings and failsafe straps at a certain station, and repair if any cracking is found. This AD was prompted by reports of cracking discovered in this area. The FAA is issuing this AD to address the unsafe condition on these products.
At the earlier of the times specified in paragraphs (g)(1) and (2) of this AD: Do a detailed inspection for cracking of the left and right hand side outboard chords of the STA 663.75 frame fittings and failsafe straps adjacent to the stringer S-18A straps, in accordance with Boeing Multi-Operator Message MOM-MOM-19-0536-01B, dated September 30, 2019. If any crack is found, repair before further flight using a method approved in accordance with the procedures specified in paragraph (k) of this AD. Repeat the inspection thereafter at intervals not to exceed 3,500 flight cycles.
(1) Prior to the accumulation of 30,000 total flight cycles, or within 7 days after the effective date of this AD, whichever occurs later.
(2) Prior to the accumulation of 22,600 total flight cycles, or within 1,000 flight cycles after the effective date of this AD, whichever occurs later.
At the applicable time specified in paragraph (h)(1) or (2) of this AD, submit a report of all findings, positive and negative, of the initial inspection required by paragraph (g) of this AD. Submit the report in accordance with Boeing Multi-Operator Message MOM-MOM-19-0536-01B, dated September 30, 2019.
(1) If the inspection was done on or after the effective date of this AD: Submit the report within 3 days after the inspection.
(2) If the inspection was done before the effective date of this AD: Submit the report within 3 days after the effective date of this AD.
